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Module 2
Graphing & wiriting linear functions
Question | Answer |
---|---|
Graph the linear equation f(x)=9x | Pick any 3 numbers for x, then plug those numbers into the equation f(x)=9x and solve for f(x) f(x)=9(1) f(x)=9 f(x)=9(0) f(x)=0 f(x)=9(-1)f(x)=-9 |
Graph the linear equation f(x)=-4x+2 | Pick any 3 numbers for x, then plug those numbers into the equation f(x)=-4x+2 and solve for f(x) f(x)=-4(1)+2 f(x)=-2 f(x)=-4(0)+2 f(x)=2 f(x)=-4(-1)+2 f(x)=6 |
f(x) is also known as | f(x) is also know as Y |
What is the form of Function Notation? | f(x)=mx+b |
Using Function Notation write the line with the given Slope and y-intercept Slope=-5 y-intercept=(0,9) | y=-5x+9 Remember Function Notation is y=mx+b |
What is the point slop equation? | y-y1=m(x-x1) |
Write the equation of the line using Function Notation. Slope=-7;through (1,7) | y=-7x+14 y-7=-7(x-1) y-7=-7x+7 +7 +7 y=-7x+14 |
Find an equation of the line through (3,5) and parallel to y=3x-2 | y=3x+4 remember y=mx+b and y-y1=m(x-x1) m=3 y-5+3(x-3) |
Find an equation of the line through (2,-4)and perpendicular to 9y=x-18 | y=-9x+14 |